<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            display: flex;
            flex-direction: column-reverse;
           
           
        }
        .item{
            background-color: rgba(39,41,43,0.03);
            border: 1px solid rgba(39,41,43,0.1);
            padding-top: .75rem;
            padding-bottom: .75rem;
            margin-right: 15px;
            width: 100px;
        }
    </style>
</head>
<body>
    <div class="box">
        <div class="item" style="order: 5;">1</div>
        <div class="item">2</div>
        <div class="item">3</div>
    </div>
</body>
</html>